_:n1785c2a0b2614359bad35ab1ae9560baxb24
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"If what you printed is not the correct size check the travel distance of each axis individually.Bring the nozzle down to the platform and mark on a piece of paper the point which the nozzle hovers over. Move the x-axis in pronterface. Mark again the position of the nozzle over the piece of paper. Check the that the two marked points are the same distance apart that you instructed the axis be moved.Repeat this for the Y axis also.For the Z-Axis use a ruler to measure the distance that the gantry rises.If an axis is moving too little or too much:&nbsp;Check that under the stepper drivers the jumpers are installed correctly (or not installed if running TMC2208&#039;s)Swap the driver for one that is working correctly - see if the problem jumps axis and replace the driver as necessary.If the z-axis is stalling/jumping/not moving smoothly see the z-wobble article on this page.Incase step values have been edited it might be worth resetting the EEPROM memory, do this by connecting with pronterface and sending M502 followed by M500.Finally, although this shouldn&#039;t need to be done, is changing the steps/mm in the firmware for the axis in the configuration.h file. This is done as a last resort and it&#039;s likely something else that is causing the dimensional inaccuracy."
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